Seismosoft | Earthquake Engineering Solutions

Item 1. What I mean is that the NGA-West2 database is the only one available at the NGA-West2 app and the NGA-East is a separate app. Item 2. While a user could manually scale to alternate parameters from PEER results, I don't see an option to scale to PGV, PGD, AI, CAV, at PEER. PEER scaling is bas...

From my experience in using the PEER online app and SeismoSelect (both excellent tools), SeismoSelect offers the following features which do not appear to be available in the PEER app: 1. multiple databases in the same application 2. scaling to intensity measures other than PSA (PGD, PGV, AI, CAV, a...

It appears that the data are harmonic loadings of varying frequency. Since the amplitudes are in mm, you would need to create acceleration histories by first calculating Asin(wt), where A is the amplitude and w is the frequency in radians per second (obtained by multiplying the given frequency in Hz...

In looking over your model, it appears that you have used 'infrmFBPH' (force-based) elements for the columns and 'infrmDB' (displacement-based) elements for all beams. The 'infrmFBPH' element is an inelastic element with inelasticity distributed over a fixed length and the 'infrmDB' element is a fib...

What type of element are you using? Note the descriptions and limitations of each element type before deciding which one is most appropriate for your situation. Displacement-based or force-based? Concentrated plasticity PH elements or fiber elements? I would suggest a through study of each element t...

But if the only load other than self-weight is the lateral push load, it seems to me that the axial load variations would be quite large due to the overturning effect (large increase in compression on the 'leeward' column and large induced tension on the 'windward' column).

The damping is indeed % of critical and the parameters, whether mass or stiffness or Rayleigh damping is specified,are determined automatically in accordance with equations found in the help system. Should the user wish to over-ride the computed values, manual input is possible.

It's an interesting problem, maktrb. The first thing I observe in examination of the settings is that you are using initial-stiffness-based damping and have specified 4% damping at a period of 0.30 seconds. This means that the effective modal damping, as a percentage of critical, for the bare frame ...

It is difficult to determine exactly what you are asking, maktrb. Your initial post stated that the bare frame fails. Your most recent post states that there is no problem with the bare frame. With infills, aren't the infills taking most of the load rather than the rigid frames? I assume the stiffne...

Hi maktrb. I downloaded your archive and tried to extract the files therein. I received the message 'archive is unreadable'.